Michele Cincera, "Patents, R&D and Spillovers at the Firm Level: Some Evidence from Econometric Count Models for Panel Data", Journal of Applied Econometrics, Vol. 12, No. 3, 1997, pp. 265-280. The ASCII file data.mc, which is in DOS format, consists of a 181 firms x 30 variables matrix. It is zipped in mc-data.zip. The variables are organized as columns. They are ordered as follows: ___________________________________________________________________________________ |VARIABLE|DEFINITION |SOURCE | |________|_____________________________________________|____________________________| |var.#1: |fi=firm's identifier | | |var.#2: |s=firm's main industry sector (s=1,...,15) |Dun & Bradstreet Int. | |var.#3: |g=firm's geographical area (g=1,...,4) | " | |var.#4: |p83=# of European patent applications in 1983|European Patent Office | | : | | " | |var.#12:|p91=# of European patent applications in 1991| " | |var.#13:|lr83=log of R&D expenditures in 1983 |Compustat, Standard & Poor's| | : | | " | |var.#21:|lr91=log of R&D expenditures in 1991 | " | |var.#22:|ls83=log of spillovers in 1983 |Anberd, OECD | | : | | " | |var.#30:|ls91=log of spillovers in 1991 | " | |________|_____________________________________________|____________________________| Notes: 1. Industry sectors: s=1: Aerospace s=2: Chemistry s=3: Computers s=4: Drugs s=5: Electricity s=6: Food s=7: Fuel and Mining s=8: Glass s=9: Instruments s=10: Machinery s=11: Metals s=12: Other s=13: Paper s=14: Software s=15: Motor Vehicles 2. Geographic areas: g=1: European Union g=2: Japan g=3: U.S. g=4: Rest of the World 3. var.#13-var.#30: millions of 1990 U.S. $ deflated by national GDP price indices. 4. The construction of the variables is discussed in section 3 of the paper.